drush_print(dt("WARNING: Updating core will discard any modifications made to Drupal core files, most noteworthy among these are .htaccess and robots.txt. If you have made any modifications to these files, please back them up before updating so that you can re-create your modifications in the updated version of the file."));

drush_print(dt("Note: Updating core can potentially break your site. It is NOT recommended to update production sites without prior testing."));

returndrush_set_error('DRUSH_PM_UPDATING_NO_PROJECT_PATH', dt('The !project project path is not available, perhaps the !type is enabled but has been deleted from disk.', array('!project' => $project['name'], '!type' => $project['project_type'])));

returndrush_set_error('DRUSH_PM_UPDATING_PATH_NOT_FOUND', dt('The !project directory could not be found within the !types directory at !full_project_path, perhaps the project is enabled but has been deleted from disk.', array('!project' => $project['name'], '!type' => $project['project_type'], '!full_project_path' => $project['full_project_path'])));